Multiple frequency range hydraulic actuator

Details Multiple frequency range hydraulic actuator Multiple frequency range hydraulic actuator

1988-10-31

1989-11-14

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367174, 91530, 91167R, 92 65, H04R 2300

Patent

active

048812110

ABSTRACT:
A multiple frequency range hydraulic actuator includes a low frequency cylinder with a low frequency actuator piston within. The low frequency piston operates as a high frequency cylinder having a high frequency piston within. The low frequency piston, and high frequency piston operate in conjunction to generate low frequency movement. The high frequency piston operates independently to generate high frequency movement.

REFERENCES:
patent: 3653298 (1972-04-01), Bilodeau
patent: 4139733 (1979-02-01), Falkenberg
patent: 4741246 (1988-05-01), Padarev

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